多基因背景对家族性高胆固醇血症的临床表现的影响
Mark Trinder1, Lubomira Cermakova1, Isabelle Ruel2
1Centre for Heart Lung Innovation, University of British Columbia and St. Paul's Hospital, Vancouver, Canada (M.T., L.C., L.R.B.).
Arteriosclerosis, thrombosis, and vascular biology
|May 23, 2024
概括
冠状动脉疾病 (CAD) 和LDL-C的多原风险评分 (PRS) 影响家族性高胆固醇血症 (FH) 的严重程度. 这些遗传因素可能有助于预测FH患者心血管疾病风险.
科学领域:
- 遗传学 遗传学 是一个
- 心脏病学 心脏病学
- 公共卫生 公共卫生
背景情况:
- 家族性高胆固醇血症 (FH) 是一种常见的遗传性疾病,在全球范围内约有300人中有1人受到影响.
- FH的特点是低密度脂蛋白胆固醇 (LDL-C) 的升高以及冠状动脉疾病 (CAD) 的风险增加.
- 由于已确定的风险因素不能完全解释FH严重程度的广泛范围,这表明潜在的遗传影响.
研究的目的:
- 调查通过多基因风险评分 (PRS) 量化的全基因组遗传因素是否有助于在FH患者中观察到的可变表型严重程度.
- 探索PRS与各种心脏代谢特征之间的关联以及FH患者动脉样硬化心血管疾病的风险.
主要方法:
- 来自FH加拿大国家登记处的1123名临床诊断的FH个体和来自英国生物库的723名遗传识别的FH个体的分析.
- 使用全基因组基因阵列数据计算CAD,LDL-C,脂蛋白和其他心脏代谢特征的PRS.
- 在FH队列和非FH对照之间比较PRS分布,并检查PRS与动脉样硬化心血管疾病风险的关联.
主要成果:
- 临床诊断的FH个体表现出较高的LDL-C水平和较高的动脉样硬化心血管疾病发病率与遗传识别的FH个体相比.
- 临床诊断FH的个体显示了与CAD,LDL-C和脂蛋白相关的更高PRS的丰富.
- 对CAD的PRS与携带导致FH的遗传变异的人群中动脉样性心血管疾病风险增加有显著的相关性.
结论:
- 整个基因组的遗传背景,反映在PRS中,用于CAD,LDL-C和脂蛋白,在确定FH的表型严重程度方面发挥着作用.
- 这些发现提高了对FH可变表达性有助于变化的因素的理解.
- 对于CAD的PRS可能会改善被诊断患有FH的人的心血管疾病风险预测.
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